diff --git a/init.lua b/init.lua
index 21d4e02..e73f034 100644
--- a/init.lua
+++ b/init.lua
@@ -18,6 +18,8 @@ if not (LANG and (LANG ~= "")) then LANG = os.getenv("LANG") end
 if not (LANG and (LANG ~= "")) then LANG = "en" end
 LANG = LANG:sub(1, 2)
 
+if PLATFORM ~= "Windows" and LANG == "ja" then LANG = "ja_utf8" end
+
 
 local INS_CHAR = intllib.INSERTION_CHAR
 local insertion_pattern = "("..INS_CHAR.."?)"..INS_CHAR.."(%(?)(%d+)(%)?)"